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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 1, Iss. 5 — Oct. 1, 2009
  • pp: 484–497

Double-Phase Polling Algorithm Based on Partitioned ONU Subgroups for High Utilization in EPONs

Sam Yeoul Choi, Sangho Lee, Tae-Jin Lee, Min Young Chung, and Hyunseung Choo  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 1, Issue 5, pp. 484-497 (2009)
http://dx.doi.org/10.1364/JOCN.1.000484


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Abstract

The Ethernet passive optical network (EPON) is an emerging technology for the next-generation broadband access networks and is considered an up-to-date candidate network for future fiber to the home. A crucial issue in EPONs is the sharing of uplink bandwidth among optical network units (ONUs). To manage resources efficiently, research on polling schemes based on multipoint control protocol has been conducted. We propose a novel polling algorithm to increase resource utilization by partitioning ONUs into two subgroups with some overlap. In the proposed scheme, after receiving frames from ONUs in one subgroup, the OLT performs dynamic bandwidth allocation for ONUs in the other. Hence, the OLT continuously receives frames from ONUs without significant interruptions. Comprehensive computer simulation results show that the proposed algorithm both defers saturation points of queues in ONUs and provides outstanding network throughput compared with previous work. It has up to 45% lower average packet delay and maximum performance improvement of 17% with respect to network throughput.

© 2009 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

History
Original Manuscript: February 17, 2009
Revised Manuscript: June 29, 2009
Manuscript Accepted: August 20, 2009
Published: September 21, 2009

Citation
Sam Yeoul Choi, Sangho Lee, Tae-Jin Lee, Min Young Chung, and Hyunseung Choo, "Double-Phase Polling Algorithm Based on Partitioned ONU Subgroups for High Utilization in EPONs," J. Opt. Commun. Netw. 1, 484-497 (2009)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-1-5-484


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